Ah yes, why not? The last time we did this, it was March 2011, so it's been almost a year since we offered a little insight into what kind of operating systems and browsers you, dear readers, are using. Nothing particularly earth-shattering going on here.

Yes, such web stats tend to underestimate Linux installations for various reasons ("in general, not only for geeks" usage: because, say, they're more likely to be company or school PCs used less for browsing, and if - then probably more on ~local sites), and overestimate OSX ones (owned by the most affluent & web active users, more on ~international sites), but still ...the exact situation in Brazil, how you describe, seems unlikely?